Home / 3,147.12-4,348.67-2,261.39

Finding the Fourth Proportional to 3,147.12, 4,348.67 and 2,261.39

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Solution

The fourth proportional to 3,147.12, 4,348.67 and 2,261.39 is: 3,124.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.12 : 4,348.67 = 2,261.39 : x
  2. Step 2: Convert to fraction form
    3,147.12/4,348.67 = 2,261.39/x
  3. Step 3: Cross multiply
    3,147.12x = 4,348.67 × 2,261.39
  4. Step 4: Simplify right side
    3,147.12x = 9,834,005.80
  5. Step 5: Solve for x
    x = 9,834,005.80/3,147.12
  6. Step 6: Final answer
    x = 3,124.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.